Math Forum / Math Software / MATLAB / July 2008

is it possible to limit rand value so that it doesn't repeat?
Which each of these file is only play one time
a{3} = {audio, fs};
a{4} = {audio, fs};

I am trying to create a half sample delay in a SIMULINK
model but getting of rate conversion problems.
The system is a continuous-time delta-sigma modulator, where
I  set the sample time very low for blocks which work in

I am trying to read fairly large chunks of analog data from
my National Instruments board (PCI 6110).  I look at the
'MaxBytes' using the 'daqmem' function, and I have plenty of
space for what I am trying to acquire (as I define in

After I changed the data type from floating point to fixed
point in my m file, the run time has increased by almost 100
times. Is this expected?
Cheers,

N = single(randn(5000,5000));
I'd like to create a single precision randn matrix without going via
the double. Any way to do that?

Does anyone know what type of file a .ike is?  Also, how
can you open it in MATLAB to get the data out?  Thanks.. =)
Judy

Can you cast a 'cell' object into a 'double' ? I want to take a user input from a dialog box (of type cell) and use that for further calculations. But you can't use a cell object type for calculations I think....or I am I wrong?

I'd like to make a plot with the axes as "crosshairs", i.e., instead of
having the X and Y axes (with tick marks, etc) at the left of and below
the plot, I'd like them to be in the middle of the plot, with the X axis
at Y=0, and the Y axis at X=0.  I see that the axes have ...

I have developed a GUI in which there is a Background Image
over which I plot the movement of sensor nodes.
function varargout = ver1GUI(varargin)
% VER1GUI M-file for ver1GUI.fig

I am looking to plot a line plot of a function (say, x^2)
and a scatter plot of various data points on the same
figure.  Is there a way to do this?
Perhaps it involves using the "hold on" command?

If I were to do something like this:
a = 3
b = 2
syms x

I have timeseries data and various intervals (1-minute, 15-minute) and would like to be able to resample these datasets so they are both at a half-hour timestamp.  An earlier post indicated that the decimate() would be a reasonable solution.  I've been unable to make this ...

plz excuse my english.
I have matlab version 6.5 and i have two problems:
1) How to solve equation F(x,y)=0? Is there in matlab any tool for that?
2)I cant find problem in my function, so plz check it:

I am designing an ip phone using the SIP protocol can you
help me with the header fields of a SIP parket

when i run my program to analyze 700+ files i get an error
part way through that reads in a seperate window:
Thie instruction at "0x787674a5" referenced memory
at "0x00000072". The memory could not be "read"